Version 4 SHEET 1 2004 996 WIRE 608 -816 464 -816 WIRE 608 -800 608 -816 WIRE 752 -784 656 -784 WIRE 848 -784 752 -784 WIRE 960 -784 928 -784 WIRE 1024 -784 960 -784 WIRE 1104 -784 1024 -784 WIRE 752 -768 752 -784 WIRE 1024 -768 1024 -784 WIRE 1104 -768 1104 -784 WIRE 656 -752 656 -784 WIRE -112 -704 -240 -704 WIRE 96 -704 -112 -704 WIRE 608 -704 608 -720 WIRE 608 -704 96 -704 WIRE -240 -688 -240 -704 WIRE 608 -688 608 -704 WIRE 752 -688 752 -704 WIRE 1024 -672 1024 -704 WIRE 1104 -672 1104 -688 WIRE 464 -656 464 -816 WIRE 656 -640 656 -672 WIRE 752 -640 656 -640 WIRE 848 -640 752 -640 WIRE 960 -640 960 -784 WIRE 960 -640 928 -640 WIRE 96 -624 96 -704 WIRE 752 -624 752 -640 WIRE -240 -592 -240 -608 WIRE 608 -592 608 -608 WIRE -112 -576 -112 -704 WIRE -64 -576 -112 -576 WIRE 416 -576 240 -576 WIRE 960 -560 960 -640 WIRE 752 -544 752 -560 WIRE -160 -512 -176 -512 WIRE -64 -512 -80 -512 WIRE 560 -512 240 -512 WIRE 960 -464 960 -480 WIRE 960 -464 816 -464 WIRE -176 -448 -176 -512 WIRE -64 -448 -176 -448 WIRE 304 -448 240 -448 WIRE 352 -448 304 -448 WIRE 464 -448 464 -560 WIRE 464 -448 432 -448 WIRE 608 -448 608 -496 WIRE 608 -448 464 -448 WIRE 960 -448 960 -464 WIRE 304 -432 304 -448 WIRE 608 -432 608 -448 WIRE -224 -384 -240 -384 WIRE -64 -384 -144 -384 WIRE 256 -384 240 -384 WIRE 304 -352 304 -368 WIRE 960 -352 960 -368 WIRE 608 -336 608 -352 WIRE -160 -320 -240 -320 WIRE -64 -320 -80 -320 WIRE 256 -320 240 -320 WIRE -208 -256 -240 -256 WIRE -64 -256 -144 -256 WIRE 256 -256 240 -256 WIRE 352 -256 336 -256 WIRE -144 -192 -240 -192 WIRE -64 -192 -80 -192 WIRE 352 -192 240 -192 WIRE 816 -192 816 -464 WIRE 816 -192 352 -192 WIRE 96 -144 96 -160 FLAG 608 -336 0 FLAG -240 -192 0 FLAG 96 -144 0 FLAG -240 -384 0 FLAG -240 -256 0 FLAG -240 -592 0 FLAG 960 -352 0 FLAG 1104 -672 0 FLAG 1024 -672 0 FLAG -240 -320 0 FLAG 304 -352 0 FLAG -240 -704 IN FLAG 1104 -784 OUT FLAG 752 -688 0 FLAG 752 -544 0 SYMBOL LTC3723-1 96 -400 R0 SYMATTR InstName U1 SYMBOL nmos 416 -656 R0 WINDOW 0 52 26 Left 2 WINDOW 3 52 62 Left 2 SYMATTR InstName Q1 SYMATTR Value IRF7201 SYMBOL nmos 560 -592 R0 WINDOW 3 55 65 Left 2 SYMATTR Value IRF7201 SYMATTR InstName Q2 SYMBOL res 592 -448 R0 SYMATTR InstName R1 SYMATTR Value 75m SYMBOL res 448 -464 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 100 SYMBOL cap -80 -208 R90 WINDOW 3 32 32 VTop 2 WINDOW 0 0 32 VBottom 2 SYMATTR Value 270p SYMATTR InstName C1 SYMBOL res -64 -528 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 200K SYMBOL res -128 -400 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 500K SYMBOL cap -144 -272 R90 WINDOW 3 32 32 VTop 2 WINDOW 0 0 32 VBottom 2 SYMATTR Value .1µ SYMATTR InstName C2 SYMBOL voltage -240 -704 R0 WINDOW 3 26 92 Left 2 SYMATTR Value 12 SYMATTR InstName V1 SYMBOL ind2 592 -816 R0 WINDOW 0 -4 39 Right 2 WINDOW 3 -4 74 Right 2 SYMATTR InstName L1 SYMATTR Value 1m SYMATTR Type ind SYMATTR SpiceLine Rpar=1K SYMBOL ind2 592 -704 R0 WINDOW 0 -2 36 Right 2 WINDOW 3 -2 76 Right 2 SYMATTR InstName L2 SYMATTR Value 1m SYMATTR Type ind SYMATTR SpiceLine Rpar=1K SYMBOL ind2 672 -768 M0 WINDOW 0 -3 38 Right 2 WINDOW 3 -2 75 Right 2 SYMATTR InstName L3 SYMATTR Value 1m SYMATTR Type ind SYMATTR SpiceLine Rpar=1K SYMBOL ind 832 -768 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L4 SYMATTR Value 20µ SYMBOL ind 832 -624 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L5 SYMATTR Value 20µ SYMBOL res 944 -576 R0 SYMATTR InstName R5 SYMATTR Value 15.8K SYMBOL res 944 -464 R0 SYMATTR InstName R6 SYMATTR Value 5K SYMBOL cap 336 -192 M180 WINDOW 0 26 52 Left 2 WINDOW 3 27 14 Left 2 SYMATTR InstName C3 SYMATTR Value .006µ SYMBOL res 352 -272 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 5K SYMBOL cap 1008 -768 R0 SYMATTR InstName C4 SYMATTR Value 50µ SYMBOL res -64 -336 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 10K SYMBOL cap 288 -368 M180 WINDOW 0 24 59 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C5 SYMATTR Value .001µ SYMBOL res 1088 -784 R0 SYMATTR InstName Rload SYMATTR Value 2.5 SYMBOL schottky 736 -560 M180 WINDOW 0 29 66 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value DFLS220L SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 736 -704 M180 WINDOW 0 27 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value DFLS220L SYMATTR Description Diode SYMATTR Type diode TEXT 632 -816 Bottom 2 !K1 L1 L2 L3 1 TEXT 728 -160 Left 2 !.tran 7m startup